Antenna



FIG. 1 is a perspective view of an antenna showing my new design;

FIG. 2 is a front side elevational view thereof;

FIG. 3 is a rear side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is an enlargement view of local portion A′ of FIG. 7 thereof;

FIG. 9 is an enlargement view of local portion B′ of FIG. 7 thereof; and,

FIG. 10 is an enlargement view of local portion C′ of FIG. 7 thereof. 

CLAIM The ornamental design for an antenna, as shown and described. 